Related Clues:
- Champs' prize on the UK game show ''Countdown''
- Voluminous ref
- Its "Concise" version has more than 1,700 pgs
- Work requiring oversized shelves, briefly
- It took 70 years to complete, in brief
- Ref. with no proper nouns in its earliest edition
- "Half-caf" was added to it in 2012
- Gargantuan Brit. lexicon
- Hefty reference: Abbr
- British ref. set
- Where age always goes before beauty, briefly
- U.K. lexicological work
- Brit. reference that added 'uplink' in 2013
- U.K. ref. bk
- Its last word is 'zyxt': Abbr